Metal-working apparatus



1,645, 72 Oct. ll J' T. JR" ET 3 METAL WORKING APPARATUS Filed Jan. l5, 1926 2 Sheets-Sheet 1 y M VEN TOR t. Oc u 1927 J. T. cooK, JR., ET AL METAL WORKING APPARATUS Filed Jan. l5, 1926 2 Sheets-Sheet 2 Z y gNVENTORS a Z f/AV) BY l 1 A TORNEYS.

Patented Oct. ll, 1927,

UNITED :STATES ,PATENT OFFICE..

JAMES r. vGoos, JR., or weer SPMNQFIELD, JOSEPH w. 111111.12111', .QF vsx-RlaaEmea..

AND mamans, J. ,aausmcai AND .HABLAN C. eoLDsMlra, or Wasi: SPRING- FI'ELD, MASSACHFU METAL-WORKING ABPAB'ATUS.

Application filed January 15, l1'926. ASera-1 '1I9.'8f1,55,8.`

Thisv invention relates to improvements l-i-n metal I'working apparatus and more particularly'to apparatus for `per forming certain operations ontirbes or thelike as will hereinafter 'ibe more fully explained.

E`Theinvention is capable of'broad lapplication 'but in the {format present preferred E1s shownand described' for particular use 1n connection ,wit-hfboiler tubes or other tubular shaped articles. In connection with the welding of boiler tubes, especially that operation'dknown as butt welding by Athe electrical welding process, the apparatnspf our invention isiparticular'ly adapted since 414; .is arranged for .machining ,the abutting ends of sections of 'tubing'tfo prepare them for the .butt welding operation and is arranged for removin the circumferential burr or upset portion rmed around thetube bythe Welding thereof. i Y

l The novel features of the invention will now be described; in connection lwith 'the accompa'nying drawings, vin which:

Fig.v 1 'is a `side`'elevational view of the apparatus embodyingjthe features .of o nr rnisntim; n

Fig. Q :is an end elevational view .of the Sam e '3 is -an elevational ,View of a cut- 'tirvlrg'tool for use in connection with the apfpar'atus; 1

` Fig. 4 'is an end elevational view of the abutting'ends of a tube prior to Welding; and i '5'.is a. similar View of the samejshowthe .burr `or ridge formed vby the butt Y welding operation. K

"Refeiiri''ngl to. the drawings 'in .detail,-a bed is represented at I which is lsupported from the Hoor .in any suitable manner .asby y.legs 2. An electric' motor is supported .oli brackets 3f and has 'its shaftconnected .to a 'ldng'itud'ina'lly rotatable shaft 4 which is carried in 'bearings '5 and 6 fixed to the bed 1j The shaft llis arranged' to carry a cnttin'g tool such as an abrasive wheel W and afsupportng shelf 45 is fixed to thebed for supporting and guiding work as it is pressed against the wheel.

driving pinion 7 on .the motor shaft is in, drviiig'engag'ement with a gear 8 which gea-r 8 is fixed Ato a pinion 9'. 'iBotlli pinion and Gear are rotatably mounted on sit'- abile shaft yor stud. The pinion i9 is iii meshing engagement with agear 'l0 fixed 'to -a shaft 12 mounted rotatably in bearings el@ and '14. By the means just described shaft l2 receives power from and is driven by the -m-otor M. Shafts I5 and 1*6 are' notatably mounted in bearings 17 and *18 aire driven vby means of 'gea-rs sach las 1 9 *fixed thereto and in engagement Wi'th agear 20 of shaft l2.

A shaft 25, having its rear end rotatable in a non-movable bearing 26, is driven by means of a gear 2f? fixed'thereto that )sin engagement with the gear 20. 'The forward end .of said shaft 25 is rotatable 'in a moyable or sliding bearing 28 `while a universal Vjoint Q9 is provided'so that the forward 'end ofthe shaft may 'be raisedor lowered without disturbing the rotative movement imparted Athereto iby vthe driving mechanism ljust described.

A central mandrel 30 is slidable and' :r0- tatafble lin a member 431 which -is pivoted -in a standard 32 so that the mandrel maybe moved up or down, as may be desired" -and Lis"preferably arranged for insertion in a 'tube as will beexplai-ned. The gearing ar- Tangement may be' Chfilllgedv or modifed :as

maybe desired or required for driving the respective shafts in any desiredV relative direction or speed, the modification shown '.bei'ng merely intended to show the embodiment of the invention at present preferred.

Rolli-s 33are removably secured to the endfs of the shafts 15 and 16 as by nuts N while a Vsimilar rol-P34` .or cutter 35 is removablyV carried on the end of shaft 25. The "bearing 28 is reciprocable between standards 36 at the end of vthe bed and is connected by a rod 37 .toy a piston 38 reci-procable in a cylinder39 at lthe upper side of the standards.

The pist-on and cylinder may be of ordinary construction and may `be connected "by suitable piping 40, 41 and a foot operated control valve to any .pressure system such asv ja steam, compresse-d air or other pressure system. 'The'parts will' preferably -be arranged so that as the valve 42 is operated :by depressing the foot treadle 43, pressure will "beadmitted to the upper side of the piston to move the piston and shaft downwardly, while as the treadle is released it will be moved in the reverse direction by a spring 44 to cause a reversal of the pressure admitted to the cylinder and so that the piston will be elevated and move the shaft 25 upwardly and remain in that position until the valve is again operated.

In operation, a suitable cutter such as 35, is fixed to the end of shaft 25 and a length' of tubing is slipped into place yon top of the lower rolls 33 and the end to be cut or trimmed is located in proper position to be acted upon by the cutter. As the motor is started the shafts l5 and 16 are rotated and the supporting rolls rotatably support the tube.` for the action of the rotating cutter 35. Thepiston is lowered so that the cutter 35 will act on the tube to trim or cut it olf square and true as isdesirable for butt welding operations.

After the welding operation a roll such as 34 is fixed on the end of the shaft 25 and the welded tube is slipped over the mandrel and located so that the burr or ridge is between the upper roll 34 and lower rolls 33. When thus located and as the tube is being rotated by the supporting rolls, the upper roll which is being driven, is forced downwardly by the piston and the combined actionof the rolls acts to roll down and smooth 0H the burr or ridge and thereby produces a smooth welded joint.

In case it is desired to further finish or work on the surface'of the tube it may be placed on thesupport adjacent the wheel .W as shown in dotted lines and rotated by the operator against the lcutting face of the wheel Fromy the foregoing it will be seen that wel-have provided a structure in which 'thetubefis supported by rotating supports that tend to rotate it while it is being acted upon by'a tool that is also driven for the working operation and arranged to be moved towards and away from the work.

We are aware that many changes may be made in the form of the invention without departing from the scope thereof andjwe therefore prefer to be limited by the appended claims rather than by the foregoing description.

What we claim is z.

1:. lA machine of the class describedcomprising in combination, work supporting shafts, a mandrel mounted on said machine substantially parallel to said shafts arranged for movements towards andaway therefrom and longitudinally with respect thereto, a

Vtool shaft having its forward end movable towards and away from said mandrel, means forv driving said shafts and means for moving said tool shaft towards and away from saidmandrel.l 'y

2. A machine of the class described comprising in combination, work supporting shafts, a rotatable mandrel mounted on said machine substantially parallel to said shafts arranged for movements towards and away therefrom and longitudinally with respect thereto, a tool shaft having its forward end movable towards and away from said mandrel, common means for driving said shafts and power actuated means for moving said tool shaft towards and away from said mandrel.

3. A machine of the class described comprising in combination, work supporting shafts rotatable in forward and rear bearings at opposite ends thereof, a mandrel hav-A ing its rear endl slidable and rotatable in a member pivoted to said machine ad'acent the rear ends of said shafts whereby i s forward end may be moved towards and away from said shafts or longitudinally with respect to said shafts, a tool shaft movable towards and away from said mandrel, means for moving said tool shaft and means for driving all of sai-d shafts. i

4. A machine of the class described comprising in combination, a frame having driving mechanism at one end thereof and a supporting guide at the opposite end thereof, work supporting shafts driven from said mechanism and extending forwardly thereof having their forward end rotatable in said supporting guide, a mandrel disposed substantially parallel to said shafts having its rear end slidable and rotatable in a member pivoted to said frame whereby its forward end may be moved towards and away from said shafts and longitudinally with respect to the forwardiend of said shafts, a bearing member in said guide support movable to- Wards and away from said shafts, a flexible tool shaft driven from said mechanism and extendin forwardly thereof'having 4its forward en rotatable in said bearing member, and a piston reciprocable in a cylinder carried by said guide support for moving said shaft towards and away from said mandrel and supporting shafts.

5. A machine of the class described comprising in combination, a bed, driving mechanism at its rear end and a supporting guide at the forward lend thereof, work supporting shafts driven from and extending forwardly of said mechanism having' their forward ends rotatably carried in said supporting guide, ya mandrel having its rear end slidable and rotatable nin a member pivoted on said bed adjacent said mechanism whereby a tube carried thereby may be moved towards and away from said shafts and longitudinally with respect to said shafts, a bearing member carried by said support that is reciprocable towards and away from the axis of said supporting. shafts, a tool shaft driven from and extendin forwardly of saidV mechanism having its orward end rotatable in said bearing member, a universal joint intermediate the ends of said tool shaft to permit the forward end of said shaft to be moved with said bearing and a piston reciprocable in a cylinder carried bv said support for moving said bearingvand shaft whereby a tool carried therebv may be brought into engagement with a tube carried on the mandrel and supported by the supporting shafts.

In testimony whereof we have aHXed our signatures.

JAMES T. COOK, JR. JOSEPH W. MURPHY. THADDEUS J. BRUSNICKI. HABLAN C. GOLDSMITH. 

